E Branch MI5 Port Control 1915-

For later organisations with a similar name see MI5 E Branch.

MI5 E Branch was founded in August 1915 with responsibility for port control (ref 1, p.77). It worked closely with Military Permit Offices in London, Paris, Rome and New York to control civilian passage into the United Kingdom (ref 1, p.77)

By 1929, E Branch was defunct with MI5 being reduced t…